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Morphological changes in mice thyroid induced by iodine deficiency.
Virchows Archiv. B, Cell Pathology Including Molecular Pathology
|January 1, 1980
Summary
Iodine deficiency causes goiter in mice through two phases. After four weeks, thyroid changes in male mice included pluristratified follicles and papillary projections, differing from females.
Area of Science:
- Endocrinology
- Thyroid Biology
- Animal Models
Background:
- Iodine deficiency is a major cause of goiter and thyroid dysfunction globally.
- Understanding the distinct phases of goitrogenesis is crucial for developing targeted interventions.
- Sex-based differences in thyroid morphology under stress are not fully elucidated.
Purpose of the Study:
- To investigate the distinct phases of goitrogenesis induced by iodine deficiency in mice.
- To characterize the histological and morphological changes in the thyroid gland.
- To identify potential sex-specific differences in thyroid response to iodine deficiency.
Main Methods:
- Induction of goiter in mice through dietary iodine deficiency.
- Histological examination of thyroid tissue at various time points.
- Comparative morphological analysis between male and female mice.
Main Results:
- Goitrogenesis occurred in two distinct phases, with the first four weeks showing classic hyperplasia.
- After four weeks, male mice exhibited pluristratified follicles, secondary follicular cavities, and papillary projections.
- Female mice primarily retained hyperplastic changes, with limited papillary projections observed.
Conclusions:
- Iodine deficiency induces a biphasic goitrogenic response in mice.
- Significant sex-specific morphological differences emerge in the later stages of goitrogenesis.
- These findings highlight differential thyroid remodeling in males and females under chronic iodine deficiency.